The letter obtained by The Associated Press is signed by board members who are New Jersey appointees to the board. Samson, a Gov. Chris Christie appointee, didn’t sign the letter.

Foye is an appointee of New York Gov. Andrew Cuomo.

The Port Authority is being investigated for lane closures at the George Washington Bridge last fall that resulted in the resignations of two Christie allies at the agency.

Emails indicate a top Christie aide and one of his Port Authority appointees worked together to arrange the lane closures, possibly as political retribution against the mayor of Fort Lee. That aide has since been fired.